CN1962887A - Al-Mn-Fe composite deoxidizer - Google Patents
Al-Mn-Fe composite deoxidizer Download PDFInfo
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- CN1962887A CN1962887A CN 200610097699 CN200610097699A CN1962887A CN 1962887 A CN1962887 A CN 1962887A CN 200610097699 CN200610097699 CN 200610097699 CN 200610097699 A CN200610097699 A CN 200610097699A CN 1962887 A CN1962887 A CN 1962887A
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Abstract
The invention discloses a ferric base alloy with aluminium and manganese as Al-Mn-Fe composite deoxidant, which comprises the following parts: 22-24% aluminium, 35-38% manganese, not more than 1% silicon, not more than 0.15% phosphor, not more than 0.05% copper, not more than 0.015% sulphur, not more than 0.4% carbon and ferric. The specific gravity is 5.8-6.3g/cm3, which is a little less than steel liquid 5.8-6.3g/cm3 with fusing point at 1280-1300 Deg C.
Description
Technical field
The present invention relates to a kind of ferrous alloy that contains aluminium and manganese, especially a kind of Al-Mn-Fe composite deoxidizer is used to make steel final deoxygenation.
Background technology
It is fine aluminium or ferromanganese, ferrosilicon etc. that reductor is selected in general steel-making for use.Aluminium is a kind of strong reductor, after aluminium added molten steel, oxidation is promptly fused on the top layer, produces the intensive exothermic phenomenon, and makes the aluminium in the fusion coat the high aluminium sesquioxide of last layer fusing point immediately, because the mixture viscosity of this metal oxide is very big, seriously hindered the continuation fusion of aluminium, further increased the buoyancy of aluminium, and influenced its deoxidizing capacity, increase the consumption of aluminium, improved steel-making cost.For improving the economic benefit of steel-making enterprise, people adopt composite deoxidant to replace the fine aluminium reductor.As application number is SU418549, name is called " steel-deoxidizing and interfused alloy ", its aluminium that provides, manganese content are all very high, and the upper content limit of manganese is 77%, are limited to 40% down, also contain more rare earth metal, because the high-content of its manganese and the adding of rare earth metal, it is more tired that this patent exists preparation technology, and price is than problems such as height, it is applicable to the fusion of special steel deoxidation and steel, and its main application is the preparation electrode flux.Chinese patent CN1024928C discloses a kind of " Al-Mn-Fe composite deoxidizer ", and the deoxidizing capacity of aluminium has been strengthened in the adding of manganese in this reductor, but manganese upper content limit wherein is 35%, is limited to 30% down, and the utilization ratio of aluminium still is not very good.
Summary of the invention
The technical problem to be solved in the present invention is: solve the high problem of existing reductor steel-making cost, provide a kind of price lower, the Al-Mn-Fe composite deoxidizer that deoxidizing capacity is strong, foreign matter content is low.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Al-Mn-Fe composite deoxidizer, it contains aluminium, manganese, iron and other impurity, and its component content is by weight percentage: 22≤aluminium≤24,35＜manganese≤38, silicon≤1, phosphorus≤0.15, copper≤0.05, sulphur≤0.015, carbon≤0.4, iron surplus.
Foreign matter content is low to be formulated with the steel quality requirement, there are two aspects in the impurity source in the steel, is that steel scrap or molten iron are brought on the one hand, the secondary pollution when being alloying on the other hand, therefore control foreign matter content in the alloy well, can play preventing the molten steel secondary pollution effectively.
The preparation method of above-mentioned Al-Mn-Fe composite deoxidizer has following processing step:
A. prepare burden
Select for use aluminium ingot and aluminium scrap goods, blast furnace ferromanganese, mid-carbon fe-mn, steel scrap to prepare burden according to the composition of aforementioned Al-Mn-Fe composite deoxidizer as raw material;
B. melting
To contain steel scrap earlier and put into smelting furnace, 10～13% of the adding silicomanganese raw alloy dosage of throwing calcium is dephosphorizing agent then; Add silicomanganese more in the above, carry out melting; After above-mentioned raw materials all melted, the slag former by the total amount adding 5～10Kg/t that feeds intake carried out slag making; After slag making finishes, add the fluorite powder of 2～4Kg/t again by the total amount that feeds intake, then slag is taken off come out of the stove outside; Add high-powerly after slag making finishes, again manganese metal and aluminium are added melting in the stove one by one, fully stir the melting back that finishes, guaranteeing uniform ingredients, Al-Mn-Fe composite deoxidizer.
Beneficial effect of the present invention, Al-Mn-Fe composite deoxidizer of the present invention are than great, and proportion is 5.8～6.3g/cm
3, a little less than the proportion of molten steel, fusing point height, fusing point are 1280～1300 ℃, and it has the good slag that penetrates, and sinks to the molten steel deep layer, and slowly fusion has good desoxydatoin in molten steel, has improved the utilization ratio of aluminium greatly, has saved aluminium.
Embodiment
A kind of Al-Mn-Fe composite deoxidizer, it contains aluminium, manganese, iron and other impurity, it is characterized in that its component content is by weight percentage: 22≤aluminium≤24,35＜manganese≤38, silicon≤1, phosphorus≤0.15, copper≤0.05, sulphur≤0.015, carbon≤0.4, iron surplus.
Most preferred embodiment: (500Kg feeds intake)
In intermediate frequency furnace, add clean steel scrap 44kg, adding calcium simultaneously is that the dephosphorizing agent 30kg and the trade mark are the silicomanganese 300Kg of FeMn68Mi18 (its composition is: Mn:67.5%, Si:17.2%, C:1.68%, P:0.23%, S:0.03%), carry out melting, smelting temperature is 1400 ℃, add the 8Kg slag former then and carry out slag making, treat that slag fully dilutes the back and adds fluorite powder 1Kg, subsequently slag is taken off come out of the stove outside.Sampling analysis C, P content.Qualified back rising power, be that 99.6% manganese metal 110kg and the pop can remelting aluminium 46kg that contains aluminium 94.8% add in the stove one by one and melt again with manganese content, fully stir behind molten the finishing, evenly behind the composition, tapping casting is in ingot mould, after condensation, broken, finishing, the products obtained therefrom Chemical Composition is:
Al:22.25%, Mn:35.96%, Si:0.752%, C:0.35%, P:0.144%, S:0.014%, Cu:0.04%, surplus is an iron.
Claims (1)
1. Al-Mn-Fe composite deoxidizer, it contains aluminium, manganese, iron and other impurity, it is characterized in that its component content is by weight percentage: 22≤aluminium≤24,35＜manganese≤38, silicon≤1, phosphorus≤0.15, copper≤0.05, sulphur≤0.015, carbon≤0.4, iron surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610097699 CN1962887A (en) | 2006-11-20 | 2006-11-20 | Al-Mn-Fe composite deoxidizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610097699 CN1962887A (en) | 2006-11-20 | 2006-11-20 | Al-Mn-Fe composite deoxidizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1962887A true CN1962887A (en) | 2007-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610097699 Pending CN1962887A (en) | 2006-11-20 | 2006-11-20 | Al-Mn-Fe composite deoxidizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331317A (en) * | 2019-07-03 | 2019-10-15 | 江苏正达炉料有限公司 | A kind of alumal and preparation method thereof |
| CN110453040A (en) * | 2019-08-14 | 2019-11-15 | 上海盛宝冶金科技有限公司 | A kind of alumal deoxidier and its deoxidation in steel making method |
| CN112280936A (en) * | 2020-10-30 | 2021-01-29 | 济南鲍德炉料有限公司 | Aluminum-manganese-iron alloy steelmaking deoxidizer and preparation method and application thereof |
-
2006
- 2006-11-20 CN CN 200610097699 patent/CN1962887A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331317A (en) * | 2019-07-03 | 2019-10-15 | 江苏正达炉料有限公司 | A kind of alumal and preparation method thereof |
| CN110453040A (en) * | 2019-08-14 | 2019-11-15 | 上海盛宝冶金科技有限公司 | A kind of alumal deoxidier and its deoxidation in steel making method |
| CN112280936A (en) * | 2020-10-30 | 2021-01-29 | 济南鲍德炉料有限公司 | Aluminum-manganese-iron alloy steelmaking deoxidizer and preparation method and application thereof |
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